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Radiant|Lab Grown|IGI

3.12ct D IF Radiant Lab Grown Diamond

D/IF • IGI LG768631511

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG768631511

Diamond specifications and retailer prices

From £821 GBP
$1,100 USD
As of October 30, 2026
Save £6,471 GBP (89%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £7,292 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 3.12ct lab-grown radiant diamond

This 3.12ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless) and certified by IGI LG768631511 or 768631511. Listed at 17 retailers as of October 30, 2026, with prices from £821 to £7,292, a £6,471 spread on the same certified stone. Do Amore Diamonds lists it at £7,292. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.12
Carat
D
Colour
IF
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.2°
Pavilion angle33.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG768631511
Dimensions10.43 × 7.19 × 4.70 mm
L/W Ratio1.45
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
10.43 mm7.19 mm3.12 ctD / IF
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768631511
Side View
Table 66.0%Crown 45.2°Girdle: STK-THKPavilion 33.2°Culet: NoneDepth 65.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £7,292 GBP|Low: £821 GBP|High: £7,822 GBP|Avg: £2,762 GBP|-6.8%
Do Amore Diamonds
Retailer 2
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Retailer 11
Retailer 12
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Retailer 17
October 31, 2026
Retailer 13£821 GBP
Retailer 4£922 GBP
Retailer 9£1,025 GBP
Retailer 12£1,079 GBP
Retailer 7£1,108 GBP
Retailer 17£1,564 GBP
Retailer 10£1,712 GBP
Retailer 14£1,779 GBP
Retailer 11£1,932 GBP
Retailer 16£1,971 GBP
Retailer 5£2,499 GBP
Retailer 15£2,691 GBP
Retailer 3£3,494 GBP
Retailer 6£4,012 GBP
Retailer 2£5,128 GBP
Retailer 8£6,321 GBP
Do Amore Diamonds£7,292 GBP

32 data points across 17 retailers

17 retailers£821 GBP to £7,292 GBP

A
Cheapest Retailer
-
£821 GBP
$1,100 USD
A
Retailer 2
-
£922 GBP
$1,236 USD
View
A
Retailer 3
-
£1,025 GBP
$1,374 USD
View
Final sale: no returns
A
Retailer 4
-
£1,079 GBP
$1,446 USD
View
A
Retailer 5
-
£1,108 GBP
$1,485 USD
View
A
Retailer 6
-
£1,564 GBP
$2,095 USD
View
A
Retailer 7
-
£1,712 GBP
€2,185 EUR
View
A
Retailer 8
-
£1,779 GBP
$2,384 USD
View
A
Retailer 9
-
£1,932 GBP
$2,589 USD
View
A
Retailer 10
-
£1,971 GBP
$2,641 USD
View
Retailer 11
-
£2,499 GBP
A$5,151 AUD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
£2,691 GBP
$3,605 USD
View
B+
Retailer 13
-
£3,494 GBP
View
Retailer 14
-
£4,012 GBP
$5,375 USD
View
Price last confirmed 10 days ago
B
Retailer 15
-
£5,128 GBP
A$10,571 AUD
View
B
Retailer 16
-
£6,321 GBP
$8,470 USD
View
Most Expensive
B
Do Amore Diamonds
27-0023999C4 · Oct 31
£7,292 GBP
$9,770 USD
View
16 more retailers have this diamond
Prices start from £821 GBPSave up to £6,471 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
3.12ct Radiant
£821 GBP